Table 1.

Contextual (city-level) variables: Health policy, financing and organization.

Elements	Dimensions	Indicators	Specific Variables
Policy	General	--	--
	Migrant related	Accessibility of public services for the migrant population	Proportion of migrant children enrolled in public schools (%)
Financing	General	general economic situation of the city	Gross regional product (GRP) per capita (thousand Yuan)
	Migrant related	Economic situation of the migrant population	Household income of the migrant population per capita (thousand Yuan)
Organization	General	Health resource allocation	Number of practicing physicians per 1000 people (person)
	Migrant related	Health resources of the migrant population	Proportion of migrant population with health record (%)